Air bubbles trapped in ancient rocks in the Pilbara suggest the Earth's atmosphere was far thinner than previously thought, raising questions about how early Earth stayed warm enough for liquid water to flow 2.7 billion years ago....

The word "paleo" is in vogue at the moment because of its association with a popular diet. But as you're about to discover, this prehistoric era is not going to tell us is 'what to eat' but rather if cyclone shelters are needed....